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Thread: Federal T223E in 11" SBR for duty

  1. #21
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    Quote Originally Posted by GH41 View Post
    I am not and never will be using a gun for a living but if I did I would want it over gassed. Dependability would be worth more than a slightly reduced recoil impulse. That is why fighting gun manufacturers drill big ports.
    This makes no sense. "Over gassed" is wrong and will cause reliability issues of its own. There's PLENTY of room with an in-spec gas port. Undergassed to tune recoil would be just as bad as overgassing to "increase reliablity" whatever that means. Overgassed rifles are not more reliable. They're just overgassed. And they'll have reliability issues, excessive parts wear, etc…

    A "properly" gassed rifle is what you want. A stock 6920, KAC, etc… from the factory are all gassed correctly and reliable.

  2. #22
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    Tuning for felt recoil attributes alone is not aligned with span of use. That doesn't mean that the two cannot coincide or come close with the variables in some circumstances.
    Within the confines of the platform now. Some things can become clearer.
    Maybe, a better question is to look at the system overall and look into the span of use for multiple models and see what the general idea of what system can combine the two without deficiency in operation.

  3. #23
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    Correct. I was getting mixed up with the jumping around of barrels (10.5" v. 11.5") and he seems to be splitting the difference between them.

    Quote Originally Posted by TinyCrumb View Post
    I'm super familiar with 10.3" barrels and Crane spec (.070) but I wasn't aware they had a spec for 11" barrels. Surprised it's that close.

    For 10.3" barrels, Crane spec will definitely give you issues with .223 powered ammo. You'll short stroke a bit unless you're using full 5.56 nato pressured. The shorties do get gas port erosion more quickly over time so it'll "work itself" in to reliability with .223 but you won't have it from the start. Most people who want reliability seem to start with something around .073/.074. But again, this is for 10.3", not 11".

    -----

    To the OP, where are you having this done? If you have it done at a reliable shop you shouldn't need to worry about any of this. Shops like ADCO maintain lists of standard port sizes they use for each size they chop/thread for with proven testing and reliability. And you also wouldn't need to worry about FSB issues as they deal with them all the time. I'd highly recommend sending it off to them, for $70 to get something you know will be reliable and something they do thousands of times a year in their sleep it's a pretty great price. I certainly wouldn't be playing with a smith who's requiring you to spec the port size and explain how to disassemble the FSB - especially with a work gun.



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